HONG KONG (Reuters) - Two Hong Kong delegates to China’s parliament are pushing to implement mainland security laws months after pro-democracy protesters shut down major parts of the Chinese-controlled city, broadcaster RTHK said on Sunday.

The last time Hong Kong tried to pass national security legislation was in 2003 when half a million people took to the streets, a key lawmaker withdrew his support and the government was forced to withdraw its proposal.

Stanley Ng, chairman of the pro-Beijing Federation of Trade Unions, said his proposal was triggered by the so-called “Occupy Central” protests, Hong Kong’s failure to pass its own national security laws and its lack of laws addressing foreign intervention and secession.

A second Hong Kong delegate to China’s rubber-stamp National People’s Congress, Peter Wong, said he supported the proposal, RTHK said.

Hong Kong, a vibrant former British colony, returned to China in 1997 under a “one country, two systems” formula that gives it more autonomy and freedom than the mainland and a goal of universal suffrage

But Beijing’s refusal to grant a fully democratic election for the city’s leader in 2017 infuriated pro-democracy activists and politicians, prompting the Occupy protests.

Government officials have repeatedly accused foreign forces of instigating the unrest.